asmboy
Joined: 20 Nov 2007
Posts: 2128
Location: albany ny
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| crazy fuses ?? in midrange 4.085?? |
 Posted: Tue Sep 06, 2011 2:17 pm |
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I have used ver 4.085 with the 16f/c family for years using internal osc and external crystals.
Also done a number of projects with 18f parts - but never had occasion to use an external crystal with the 18F parts
I've tried this with an 18f4520 and an 18f4620 - only changing to BORV43 for that part - with the same weird results. compare my fuse statement with what the compiler did. I would GREATLY prefer if anyone knew a work around - as the code that is generated otherwise for 18f parts has been satisfactory.
I am in NO Hurry to upgrade to a fresh version and its unknowns.
Is the following bizarre fuse compilation ME or the compiler ??
| Code: |
CCS PCH C Compiler, Version 4.085, 47322 06-Sep-11 15:54
Filename: d:\abm\serdem5.lst
ROM used: 172 bytes (1%)
Largest free fragment is 32596
RAM used: 14 (1%) at main() level
14 (1%) worst case
Stack: 1 locations
*
0000: GOTO 0044
.................... #include <18f4520.h>
.................... //////// Standard Header file for the PIC18F4520 device ////////////////
.................... #device PIC18F4520
.................... #list
.................... #fuses HS,NOPROTECT,NOMCLR,NOWDT,NODEBUG,NOLVP,NOIESO,
.................... #fuses NOFCMEN,PUT,NOWRT,NOFCMEN,BROWNOUT,BORV42, // borv43 in 4620
.................... #fuses CCP2C1,NOPBADEN,NOLPT1OSC,noxinst,
.................... #include <stdlib.h>
.................... #use fast_io(B)
.................... #use delay( clock=16588880,INTERNAL ) // clock changed to 80000
.................... #use rs232(baud=57600, xmit=PIN_C6, rcv=PIN_C7, ERRORS )
*
0030: BTFSS F9E.4
0032: BRA 0030
0034: MOVWF FAD
0036: GOTO 0082 (RETURN)
.................... #bit T0IF = 0xFF2.2 // flag in reg
.................... //***********************************
.................... void InitHDW ( void ) {
.................... //***********************************
.................... output_b (0); // - all INPUT
*
001E: CLRF F8A
.................... set_tris_b (0);
0020: MOVLW 00
0022: MOVWF F93
.................... set_tris_c (128); // set bit 7 per datasheet for C7=INPUT
0024: MOVLW 80
0026: MOVWF F94
.................... SETUP_TIMER_0(RTCC_8_BIT|RTCC_DIV_256);
0028: MOVLW C7
002A: MOVWF FD5
.................... }
002C: GOTO 0078 (RETURN)
.................... void zertime(void){
.................... t0if=0; set_timer0(93);
*
003A: BCF FF2.2
003C: CLRF FD7
003E: MOVLW 5D
0040: MOVWF FD6
.................... }
0042: RETLW 00
.................... void main() {
0044: CLRF FF8
0046: BCF FD0.7
0048: CLRF FEA
004A: CLRF FE9
004C: MOVLW 60
004E: MOVWF FD3
0050: MOVLW 40
0052: MOVWF F9B
0054: MOVF FD3,W
0056: BCF FB8.3
0058: MOVLW 11
005A: MOVWF FAF
005C: MOVLW A6
005E: MOVWF FAC
0060: MOVLW 90
0062: MOVWF FAB
0064: MOVF FC1,W
0066: ANDLW C0
0068: IORLW 0F
006A: MOVWF FC1
006C: MOVLW 07
006E: MOVWF FB4
0070: CLRF 05
0072: CLRF 06
0074: CLRF 0B
.................... unsigned int8 i;
.................... InitHDW();
0076: BRA 001E
.................... printf ("*Hello*\r"); // quick check output baud
0078: CLRF 0D
007A: MOVF 0D,W
007C: RCALL 0004
007E: INCF 0D,F
0080: BRA 0030
0082: MOVLW 08
0084: SUBWF 0D,W
0086: BNZ 007A
.................... while (1) { // now get AND send at same time
.................... for (i=0; i<255; i++){
0088: CLRF 0C
008A: INCFSZ 0C,W
008C: BRA 0090
008E: BRA 00A8
.................... output_high(pin_b0);
0090: BSF F8A.0
.................... zertime();
0092: RCALL 003A
.................... while (!t0if){};
0094: BTFSC FF2.2
0096: BRA 009A
0098: BRA 0094
.................... output_low(pin_b0);
009A: BCF F8A.0
.................... zertime();
009C: RCALL 003A
.................... while (!t0if){};
009E: BTFSC FF2.2
00A0: BRA 00A4
00A2: BRA 009E
.................... }
00A4: INCF 0C,F
00A6: BRA 008A
.................... } // END : while 1
00A8: BRA 0088
.................... }
.................... //
00AA: SLEEP
Configuration Fuses:
Word 1: 0800 NOIESO NOFCMEN INTRC_IO
Word 2: 1E0E BROWNOUT NOWDT BORV42 PUT WDT32768
Word 3: 0100 NOPBADEN CCP2C1 NOLPT1OSC NOMCLR RESERVED
Word 4: 0081 STVREN NODEBUG NOLVP NOXINST RESERVED
Word 5: C00F NOPROTECT NOCPD NOCPB
Word 6: E00F NOWRT NOWRTD NOWRTC NOWRTB
Word 7: 400F NOEBTR NOEBTRB
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Is there a work around or did I do something that caused this ?? |
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